Merge pull request 'home-assistant. Nginx config and README.md.' (#72) from feature_70_home_assistant into master

Reviewed-on: #72

home-assistant/README.md

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+# Home Assistant
+
+## Using with reverse proxy (like Nginx)
+
+If you're using Home Assistant with reverse proxy, you need to enable it and add trusted proxy address. Otherwise you
+will get 400 (Bad Request) each time you try to open HA's web interface.
+
+To achieve that edit `configuration.yaml` after it was generated at first launch and add missing options.
+
+```yaml
+# config/configuration.yaml
+http:                                                                                                                                                        
+  use_x_forwarded_for: true                                                                                                                                  
+  trusted_proxies:                                                                                                                                           
+    - '127.0.0.1'                                                                                                                                            
+    - '::1'
+```

home-assistant/nginx/home-assistant.conf

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+server {
+    listen       80;
+    server_name  ha.domain.tld;
+
+    #charset utf-8;
+
+    location / {
+        proxy_set_header        Host $host;
+        proxy_set_header        X-Real-IP $remote_addr;
+        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header        X-Forwarded-Proto $scheme;
+
+        #proxy_hide_header X-Powered-By;         ## Hides nginx server version from bad guys.
+        proxy_set_header Range $http_range;  ## Allows specific chunks of a file to be requested.
+        proxy_set_header If-Range $http_if_range;  ## Allows specific chunks of a file to be requested.
+        #proxy_set_header X-Real-IP $http_CF_Connecting_IP;  ## if you use cloudflare un-comment this line and comment out above line.
+
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection $http_connection;
+
+        proxy_pass http://localhost:8123/;
+    }
+}